ref: 17f7f6be4e1a316c0f5f26ff70e047aece4de2bc
dir: /sys/src/9/xen/xen-public/mem_event.h/
/****************************************************************************** * mem_event.h * * Memory event common structures. * * Copyright (c) 2009 by Citrix Systems, Inc. (Patrick Colp) * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ #ifndef _XEN_PUBLIC_MEM_EVENT_H #define _XEN_PUBLIC_MEM_EVENT_H #include "xen.h" #include "io/ring.h" /* Memory event flags */ #define MEM_EVENT_FLAG_VCPU_PAUSED (1 << 0) #define MEM_EVENT_FLAG_DROP_PAGE (1 << 1) #define MEM_EVENT_FLAG_EVICT_FAIL (1 << 2) #define MEM_EVENT_FLAG_FOREIGN (1 << 3) #define MEM_EVENT_FLAG_DUMMY (1 << 4) /* Reasons for the memory event request */ #define MEM_EVENT_REASON_UNKNOWN 0 /* typical reason */ #define MEM_EVENT_REASON_VIOLATION 1 /* access violation, GFN is address */ #define MEM_EVENT_REASON_CR0 2 /* CR0 was hit: gfn is CR0 value */ #define MEM_EVENT_REASON_CR3 3 /* CR3 was hit: gfn is CR3 value */ #define MEM_EVENT_REASON_CR4 4 /* CR4 was hit: gfn is CR4 value */ #define MEM_EVENT_REASON_INT3 5 /* int3 was hit: gla/gfn are RIP */ #define MEM_EVENT_REASON_SINGLESTEP 6 /* single step was invoked: gla/gfn are RIP */ #define MEM_EVENT_REASON_MSR 7 /* MSR was hit: gfn is MSR value, gla is MSR address; does NOT honour HVMPME_onchangeonly */ typedef struct mem_event_st { uint32_t flags; uint32_t vcpu_id; uint64_t gfn; uint64_t offset; uint64_t gla; /* if gla_valid */ uint32_t p2mt; uint16_t access_r:1; uint16_t access_w:1; uint16_t access_x:1; uint16_t gla_valid:1; uint16_t available:12; uint16_t reason; } mem_event_request_t, mem_event_response_t; DEFINE_RING_TYPES(mem_event, mem_event_request_t, mem_event_response_t); #endif /* * Local variables: * mode: C * c-file-style: "BSD" * c-basic-offset: 4 * tab-width: 4 * indent-tabs-mode: nil * End: */